EximScan+ClamAV+SpamAssassin but still getting SPAM

Hey, I have ClamAV, SpamAssassin, and EximScan, and I'm getting a TON of SPAM.

What should I do?

I keep reading up on MailScanner, but I don't want to consume a lot of processes or memory. I've seen the small little hardware boxes out there that we can have our mail go through, but I don't know if I want to change all of our MX entries and mess with things on the cpanel server setups.

MailScanner won't necessarily cause any system load issues. I've run it on servers with as little as 128MB of RAM with no problems. ClamAV tends to use quite a lot of resources, but that is much leaner and quicker now. I tend to get around 98+% detection rates with our MailScanner combination. If you don't have an overloaded server already, then MailScanner may well be a better solution for you (rmemeber that there will always be false-positives and some spam will always get through, it's more about stemming the flow than stopping it altogether.